5x减3y等于x加2y，那么y等于多少呢？

()()带舞成语 什么什么带舞(成语) 襟什么带舞的成语 带舞成语有哪些成语 带舞的成语有哪些 Is Maria knocking at the door ? ------It( )be her. She is in Australia now.A.may not B.needn't C .mustn't D.can't翻译 求助GMAT一道语法题According to a 1996 survey by the National Association of College and University Business Officers,more than three times as many independent institutions of higher education charge tuition and fees of under $8,000 a year than 5至19世纪前期欧洲有哪些主要社会思潮 Someone is knocking at the door.___ it be Venis?—No,it ___ be her; she lSomeone is knocking at the door.___ it be Venis?—No,it ___ be her； she left for New York this morning.A.Can； mustn’t B.Might； can’t C.May； doesn’t D.Can； can 用介词填空 求用介词填空 She is Lucy.(改为否定句)She______ _______ Lucy. 用介词填空 You'd better go home at the moment (改为否定句） ____ ____ ____ ____ home at the moment是不是那四个空可以填You'd not better go home at the moment 用所给的介词填空,急 just work hard,-----your drean will come trueA but B and C or 三次科技革命如何影响世界经济贸易格局 wWhatever excuses we have for not living up to our talent,the fact is that time will always move…Do you want to know who you are?Don't ask.Act!Action will explain you.Whatever excuses we have for not living up to our talent,the fact is that time wi 我又歌词 但是不知道是什么歌名 you always on my mind our dangrs all the time you re eveeyhing to me 有没有more listen to为什么 listen to songs be sure of可否换为make sure of? Mr Black is reading a newspaper in the study用疑问句 We must book a room for Mr Black. 老师在上课(扩句,至少扩充两处) 小慧在上课 扩句 求 请以“老师在上课”为内容扩成一句不少于50字的话要准确、鲜明、生动 描写上课场面的句子要自己写! 信息技术的五次发展大概发生在什么年代下课要交快 Tell them to keep quiet in the reading room.改为同义句Tell them ( ) ( ) talk in the reading room. 用括号内正确形式填空：The reading room is quiet,so she walks in______(quiet). 英语翻译A:正如许多人认为的那样,蜘蛛并不是昆虫,甚至和昆虫一点关系都没有B:蜘蛛并不像许多人认为的那样是昆虫,它和昆虫一点关系都没有